Casting-pot.



GBENVILLE MELLEN, F EAST ORANGE, NEW JERSEY.

casarme-Por.

yTo all 'whom #may concern.'

n Be it known that I, GRENVILLE MELLEm i ja citizen of the United States, residing at East Orange, in the county of Essex and State of New of which the following is a specificat1on.

y invention relates to an apparatus for delivering molten metal from a casting-pot by pressure produced within the pot; and may be considered as an improvement of the device shown in my prior Patent 1,053,948, patented February 8, 1913.

, My invention Arelates to the provision of means foi-.producing pressure Within theA pot, means for sealing the pot, means for y and economicallydelivering metal from the pot, and toV a coordinated mechanism for enabling these means to operate in proper relation to safely deliver the' molten metal or other material from the pot to ""the place of use. These and other features of my in-` vention are.pointed out in the claims attached to this specification, .which fully describes the invention, in connection with the accompanying drawings, in which,-

Figure 1 is a plan view of the machine; Fig. 2 is an end elevation, part of the casing being broken away and the meltingpot shown in section;

Fig. 3 is a side elevation, with the hood partlyy broken away, of the machine with the parts in casting position;

F1g.4 is a side elevation, showing the mechanism 4in ing position;

Fig. 5' is avertical section through the casting-pot; and

Fig. 6 is a detail of the pump-lifter mechanism'..." p

Referring to the drawings, the castingpot 1 is suitably supported over a furnace 2, which may be of any suitable construction. 3 is a hood,"y covering'the casting-pot, and has an exit flue 4. During the discharge of molten metal frointhe pot the lid 5 is held tightly against the inner face of the Wall of the pot-chargan openlng in the upper portion of the pot These coperating surfaces are preferably provided with a coperating and depression, as indicated in dotted This lid is mounted with some slight play -to enable it to adjust itself to form a closure, on the end of the curved arm 6,

i Specication of Letters Patent.

Jersey, haveinvented certain `newvand -useful Improvements in Casting- Fots,

pipe 23 and valve 24 into the p .pivoted at 30. The

iikerig.- 3, but' "charged with molten Patented Feb. 20, 1917.

Application led June 29, 1914. Serial No. 848 012.

which is keyed onto shaft 7, journaled in bearings 8, 8, or the top of the pot, and 9 to'one side thereof. Secured to the shaft 7 is a forked tilt: ng arm 10, and to this arm pivoted by bolt 12, the forked link l1,

1 n turn pivoted to the discharge-pipe arm 13. The bolt 12 ypasses through a slotted block 14, carried at the top of the piston-rod 15 of a hydraulic cylinder 16, the piston of which is moved 1p and down by means of fluid pressure controlled' by the -cock4 17. The arm 13 at iis lower end is secured to the discharge pip a 75. At its inner end, this pipe is curved, a; shown in Fig. 2, to conform to the inner curvature of the pot, and has a horizontal I)ortion extending through the side of the :Jot and into the delivery pipe 17. In order to discharge sufficient Water into the casting-pot, so that the steam pressure producer. will force out the molten metal, I provide a cylinder 1 8, having therein a piston, whose piston rod 19 has at its upper end'a platform 20, carrying Weights 21. vWater is admitted to the cylinder from pipe 22 through a suitable check valve (not shown) and delivered therefrom through The arm 13'has `Lt its end a hook 25, which when the arm swings down, engages a yielding latch 26, norm nlly held in outward position by spring 27, this latch (see Fig. 6) being mounted on the pump-lifter arm 28 forked outer end of the arm 28 straddles tl .e piston rod 19 and when` it `rises, lifts the platform 20 and the attached piston rod L9.` 31 is a spring bufer for arm 28, when it `drops back. 32 is a pressure relief valve, from which any excess pressure Huid is delivered through' pipe 33.

' The device operates as follows Assuming the` pz rts to be in the position shown 'in Fig. 4, ti 1e opening in the top of the pot will be open, .Withathe lid 5, arm 6, and discharge pipa in the dotted line position of Fig. 5 The pot can then be metal or metal` to be melted. The operal or thenby operating the Vvalve 17, admits pnssure Huid into cylinder 16 to raise the piston rod 15, thereby chang-- ing' the position of arm 10 lfrom that shown in Fig. 4 to thatof Fig. 3, thus bringing the lid 5 into the clos ed (full line) posltion (Figs. 2 and 5) and rotating the discharge pipe 75, so that it is-lowered into molten metal in the pot (Figs. 2 and 5). At the;

the pot. `When the metal same time, the link 11 rotates the arm 13, which, the hook 25 and latch 26'being` in engagement, raises arm 28, whichin turn raises the iston rod 19, and the weights carried there y to the position shown in Fig. 3. The risingpiston sucks water through pipe 22 into. lthe cylinder', the check valve holding it therein. As the arms 13 and 28 are pivoted on different centers, the hook 25 will, as the two arms rotate, move outward along the under surface of the-latch, and. when the arm 28 has been raised t o the desired height, release the arm 28, which drops back to its original position'.

The cylinder 18 now containswater under pressure of the accumulator weights 21, and the lid onthe pot is held tightly closed by the hydraulic pressure iii cylinder 1G. The cylinder 1S is so proportioned as to contain the requisite amount of' watcnto furnish suicient pressure, when vaporized in the pot, to eject all the molten. metal through discharge pipe 7 5 and delivery pipe 17. "he operator now opens ,valve 24, and the water is forced from the cylinder through pipe 23 into the space above the molten metal in the pot, where the heat vaporizes it and the pressure developed ejects the molten metal. l be closed at any time, thus stopping the ow of Water. Sufficient weights 21 are used to counterbalance the developed pressure in has beendelivered from the pot, `the operator, by reversing valve 17, can cause 1 to restore the parts to the open-lid position,

ready for a new charge. l y

Any vexcess pressure-is relieved through y safety-v alve 32.

By theymeehanism above described, the operation'of casting is effected with a minimum of labor, expense and fuel,.with an `in-V crease of capacity. y

Only one operation, the turning of a valve, is required to set the mechanism for charging with metal; and a second operation, the turning or other place of use.

Vhile I have described in detail a mechanism suitable for carrying out the purpose of this invention, it is obvious that other equivalent mechanical devices may be employed, and that instead ofemployin-g a hydraulic operating mechanism, the lever system may' be operated by any other power,

-such as steam or electricity or by hand; and

further that whilemy invention is intendwith molten metals, it is applicable for use with other materials at high temperatures.

1. In a casting machine, the combination of a melting-pot, a closure therefor, a pump, a valve. controlled conduit connecting the 'Pump nected and arranged to coincidently operate simultaneously charge pipe;

The valve 24I -may-olf course the hydraulie'mechanism in said pot, and means of another valve, 'to deliver the molten metal to the casting machine,

. for, a pivoted to the melting-pot, and means conthe closure and the pump.

2. In a casting-machine, the combination with`a meltingpot, a discharge pipe therefrom, of a pumping device comprising a piston and a weighted piston rod, a valve-controlled conduit connecting the discharge ofthe pump and meltingpot, and means Or operating the pumping device. i

3. In a casting-machine, the combinatie with a melting-pot, a discharge vpipe therefrom and a closure therefor, ofV a pumping device comprisin piston rod, a va ve-controlled conduit connecting the pump and melting-pot, and means connected and 'arranged to coincidently operate the closure and the pump.

'4. In a casting-machine, tlie'coinbinatioii with a pot, of a movable closure therefor, a ldischarge pipe rotatably mounted iii -said pot and means operate the closure and dis- 5. In a casting-machine, the combination with a ot, a`movable closure therefor, and

means or introducing fluid into the melt- ,mgpot of a discharge pipe rotatably mounted in said pot', and means connected and arranged to simultaneously operate the Aclosure and discharge pipe.

6. In a' casting-machine, the combination with a pot, a movable closure therefor, and a pump for introducing iuid into the meltingpot, of a discharge pipe rotatably mounted connected and arranged to simultaneously sure and discharge pipe and the pump.

p 7. In a casting-machine, the combination with a casting-pot of a movable closure therefon-a pump-cylinder having a weighted piston rod, a discharge pipe rotatably mounted in said pot, a valved conduit connecting a piston and a weighted operate the cloconnected A'and arranged to f the pump cylinder and pot, power mecha\ nism connected to operate said closure and discharge pipe, and a lever detachably connected to said power mechanism for operating said pump.

8. In acasting-machine the combination A with a rcasting-pot of a pivoted closure therefor, a discharge pipe rotatably mounted therein, apower mechanism, levers connecting thepower mechanism to the closure and discharge pipe, a pump, a piston rod therelever for operating said piston i-od, and cooperating engaging means on the discharge pipelever and the pivoted lever.

9. In a casting machine, the combination with a casting-pot of a closure therefor, a rotatable discharge pipe mounted in said pot, a pump, a conduit connecting the pump and pot, and mechanism connected and arranged to coincidently operate the discharge pipe and pump.

10. The combination with a casting-pdf.

having an opening therein, of a closure therefor, a discharge pipe therefrom, a pump having a weighted piston rod, a valved conduit connecting the discharge of the pump ang` pot, and means for raising the piston ro 11. In a casting-machine, a casting-pot having an opening therein, a pivoted lid fitting against the inner wall of said opening, and mechanism for operating said lid.

12. In a casting machine, a casting pot, a discharge pipe having a horizontal portion passing through and journaled in the Walls of said pot, and a depending portion arranged to extend downwardly into the pot, and means for rotating the pipe about its horizontal portion, whereby the depending portion is raised above the level of the metal. v

13. In a casting machine, a casting pot, a discharge pipe having a horizontal portion passing through and journaled in the walls of said pot, and a depending portion arranged to extend downwardly into the pot 4'and shapedto conform to the inner wall of the pot,l and means for rotating the pipe about its horizontal portion', ,whereby the dc-l pending portion is raised above the level of the metal. l 14. A casting-pot having a curved upper portion, an opening to one side thereof, a

curved arm carrying a lid and pivoted on said pot, said lid arranged to engage the inner Wall of said opening inthe closed position and to move back against the inner Wall of the pot in the open position.

15. A casting-pot having a curved upper portion, an openingtoone side thereof, a curved arm carrying a lid and pivoted 011 said pot, said lid arranged to engage the inner wall of said opening in the closed position and to move back against the inner Wall of the pot in the open position, and a discharge pipe rotatably mounted on'said pot.

16. A casting-pot having a curved upper portion, an opening to one side' thereof, a curved arm carrying a lid and pivoted on said pot. said lid arrangedto 4engage the inner wall of said opening in the closed position and to move back against the inner Wall ofthe pot in' the open position, a discharge 'pipe rotatably mounted on said pot, and

to coincidently operate the closure and the pump.

18. In a casting-machine, the combination with a meltingpot, a discharge pipe theref i' from, of a pumping device outside the pot comprising a piston and a Weighted piston rod, a conduit connecting the discharge of the pump and melting-pot, and means fo operating the pumping device.

19. In a casti rig-machine, the combination with a meltingpot, a discharge pipe therefrom and a cloi'ure therefor, of a pumping device comprising a piston and a weighted piston rod, a conduit connecting the pump and melting-po 1, and means connected and arranged to coincidently operate the closure vand the pump.

2,0.-` In a casti ig-machine, the combination with a castingfpot of a movable closure therefor, a pum] cylinder having a Weighted 'piston rod, a discharge pipe rotatably mounted in said pot, a :onduit connecting the pump. cylinder and pot, power mechanism connected -to-operaie said closure and discharge pipe, and a lever adapted to be detachably connected to said power mechanism for operating said pump.

21. 'The combination With a casting-pot having an openi ig therein, of a closure therefor, a discharge pipe therefrom, a pump outside the pot having a Weighted piston' rod, a.

conduit connecting the discharge of the pump and pot, and means for raising the piston rod.

In testimony whereof I aflix my signature in presence of hree Witnesses.

c-RnNvILLE MELLEN. 

